Stovepipe coupling



June 7, 1938- E. s. CORNELL, JR

STOVEPIPE COUPLING lFiled Feb. 12j 1956 2 Sheets-Sheet l INVENTOR.

Bymlw 1\ l ATTORNEY.

June 7,'1938 E. s. CORNELL, JR 2,120,211

STOVEPIPE COUPLING Filed Feb. 12, 1936 2 Sheets-Sheet 2 L., nTgfllllll2.9 INVENTOR.

Z6 @da/MM/ AWORNEY.

Patented .lune 7, 1938-.

UNITED STATES PATENT OFFICE STOVEPIPE COUPLING Application February 12,1936, Serial No. 63,501

1 Claim.

My invention relates to improvements in means for connecting tubularelements, pipes, and the like, and the same has for its object toprovide a simple, eicient and inexpensive device for connecting thesmoke outlet of a heating apparatus with a chimney or stack.

Further, said invention has for its object to provide a fluid-tightcoupling whereby the smoke outlet of a heating apparatus may be readilyand conveniently connected to or disconnected from the intake opening ofa chimney or stack.

Further, said'invention has for its obj ect to provide a connection ofthe character described in which a coupling section may beinterposedbetween the smoke outlet and the intake opening in the chimney or stackand secured by separate clamping members interposed between the oppositeends of the coupling section and said smoke outlet and chimney intakeopening, respectively.

Further, said invention has for its object to provide a connection ofthe character specified in which a coupling section of less length thanthe distance between the smoke outlet of the heating apparatus and theintake opening of the chimney or stack is interposed between the sameand secured by readily detachable clamping members engaging ends of saidcoupling section and the cooperating parts on said secured smoke outletand the chimney or stack intake.

Other objects will in part be obvious and in part be pointed outhereinafter.

To the attainment of the aforesaid objects and ends my inventionconsists in the novel features of construction, and in the combination,connection and arrangement of parts hereinafter more fully described andthen pointed out in the claim.

In the accompanying drawings- Figure 1 is a side elevation showing aheating apparatus and chimney with one form of smoke pipe connectionconstructed according to, and embodying my said invention;

Fig. 2 is an enlarged side elevation, partly broken away and in sectionshowing the coupling section, and the means for securing the same to thesmoke outlet of the heating apparatus and the intake opening of thechimney or stack;

Fig. 3 is a detail perspective view of one of the (Cl. 285-194) y Fig. 6is a detail plan or face View of the parts shown at Fig. 5, and

Fig. '7 is an enlarged detail section on the line 'I-I of Fig. 2.

Insaid drawings I designates a heating apparatus which may be of anytype and form but is here shown, by way of example, as a hot waterboiler of the form commonly used for house heating purposes,. andprovided at its back section with a smoke hood II having an outlet I2 inits top provided with a circular flange I3.

I4 denotes a chimney or stack having an intake opening I5 therein intowhich is fitted a short tubular member or thimble I6 having a flange Ilintermediate its ends in engagement with the outer side of the chimneysurrounding the intake opening I5 therein. The thimble I6 is preferablypermanently secured in the intake opening I5 with its end I 6aprojecting outwardly from the chimney or stack.

I8 denotes a coupling section which may be of any size or shape, and ofless length than the distance between the flange I3 of the smoke hood IIand the outwardly projecting end or flange I6a of the thimble I6, buthas its opposite ends conforming to and registering with the ends of theanges I3 and I6 of the smoke hood II and thimble I6, respectively.

The coupling section I 8, in the present instance, is in the form of anelbow of uniform diameter, and preferably possesses the same diameter asthe flanges I3 and Ilia, and has its opposite ends disposed in spacedrelation to the ends of said flanges by the clamping members I9.

The clamping members I9 are preferably formed of sheet metal, and eachcomprises two semi-circular` members 20, a which are secured together attheir corresponding ends by hinge members 2| and a pin 22. The oppositefree end of the semi-circular member is provided with a rolledcylindrical portion 23 having a portion cut away at 24 to receive theperforated head 25 of a screw 26 which is pivotally supported by a pin21 extending through said screw and said cylindrical portion 23. Thecorresponding end of the semi-circular member 2l is provided with a flattransverse portion 28 having a recess 29 therein to receive the free endof the screw 25, when the ends of said semi-circular membersare broughttogether, and be secured to adjusted position by a wing-nut 30 workingon the free end of the screw 26. Each semi-cylindrical portion 2U, 2| isprovided with a central semi-annular rib 3l, which is angular in crosssection, and whose edges, when the portions 20, 2| are secured together,form annular stops against which the ends of the coupling section I8,and the ends of the flanges I3, I 'I abut, and are maintained in dulyseparated relation thereby.

The inner surface of each semi-circular member 20, 2|, between the outeredges thereof and the opposite edges of the semi-annular ribs 30, areprovided with packing strips 32 which are secured in place by rivets 33and completely cover the inner surfaces of said semi-circular members20, 2|.

As illustrated in Figs. 4 and 5, the packing strips 32 are coextensivelengthwise with the combined lengths of the ribs 3I, so that when theends of the respective ribs 3| abut to seal the joint between the endsof the pipe or conduit elements being coupled, the ends of the packingstrips also abut to complete huid-tight sealing of the coupled pipe orconduit elements,

It is to be noted that by means of my invention I am enabled to providea coupling whereby a fluid or gas tight connection may readily be formedbetween the smoke hood of a heating apparatus and the intake opening ofa stack or chimney without necessitating the` use of cement or similarsealing medium. Further, said invention provides a coupling which may beeasily and quickly connected to or removed from a heating apparatus andstack without requiring the use of any tools or instruments.

It will, of course, be understood that while I have shown and describedmy said invention in connection with a coupling for connecting a heatingapparatuswith a stack, that the same is not limited thereto as saidinvention is readily applicable to the securing together of the ends ofpipes or tubular members of various diierent kinds.

Having thus described my said invention what I claim and desire tosecure by Letters Patent is:

A clamping device for coupling two longitudinally aligned ends ofrespective hollow tubular conduits in sealed relationship, comprising apair of pivotally connected metal-strip members adapted to close inencircling relationship about the ends of the conduits to-be connectedand to jointly conform to the circumferential contour thereof, saidmembers having their free ends Ydirected outwardly to form ears adaptedfor interconnected clamping action, said members each having an inwardlyprojecting substantially central rib portion extending longitudinallyand continuously throughout the length of the element, said rib portionsbeing adapted to mutually abut in end to end alignment when the saidmembers are closed about the ends of the conduits to be coupled, to forman abutment stop for and between the said ends of the conduits, whichabutment stop extends continuously around the full periphery of the saidends of the conduits in sealing relationship therewith; packing materialsecured to and covering the inner surfaces of said members on each sideof said rib portions, said packing material being in continuouslongitudinal coextension with said rib portions and adapted to abut inend to end alignment when the said members are closed about the yends ofthe conduits to be coupled, for forming,

together with said rib portions, a fluid-tight seal thereabout; andmeans secured to one of said ears for clamping said members inmaintained sealing relationship.

EDWARD S. CORNELL, JR.

